No problem.
Ask any more, if you want. You WILL get an answer. Trust me.
If you have questions on certain, specific things, these people would be a very good help:
Sonar-Sonar732
Nuclear Submarines-Bubblehead Nuke
Tactics-Sea Queen
Russian Weapons-Kapitan or XabbaRus
ASW-ASWnut101 (hehe, thats me.
)
Of course, the plenty other people on this site are a great, welcome help aussi!